#include <iostream>
using namespace std;

int main()
{
  int A,B,r = 0;
cin>>A;
cin>>B;
  r = A - 1;
  if (A<B)
  {
    int N = 0;
    for (;A<=B;++A)
    {
      r++;
   cout<<r<<endl;
      N++;
    }
 cout<<N;
  }

  return 0;
}
